OK Tigrod 347

OK Tigrod 347 is a corrosion‑resisting chromium‑nickel TIG rod, stabilized with niobium for improved high‑temperature performance.

Key Features

• Niobium stabilization for resistance to intergranular corrosion
• Designed for stabilized austenitic Cr‑Ni alloys (18% Cr – 8% Ni)
• Suitable for higher temperature applications
• Available in multiple diameters (1.6, 2.0, 2.4, 3.2 mm) with 5 kg packs

Specifications

• Classifications: EN ISO 14343‑A : W 19 9 Nb, SFA/AWS A5.9 : ER347, Werkstoffnummer ~1.4550
• Approvals: CE (EN 13479), UKCA (EN 13479), VdTÜV (19918)
• Alloy Type: Austenitic (≈8 % ferrite) 19 % Cr – 9 % Ni – Nb
• Shielding Gas: I1 (EN ISO 14175)
• Tensile Properties (As Welded): Yield 510 MPa, Tensile 655 MPa, Elongation 35 %
• Charpy Impact (As Welded, 20 °C): 130 J
• Typical Weld Metal Composition (%): C 0.04, Mn 1.3, Si 0.4, S 0.009, P 0.016, Ni 9.2, Cr 18.8, Mo 0.1, V 0.05, Al 0.002, Cu 0.1, N 0.06, Nb 0.6, Ti 0.003, Co 0.1, FN 8

Applications

• Welding of stabilized austenitic stainless steels (18‑8 type)
• High‑temperature service welds
• Industries requiring excellent corrosion resistance such as petrochemical, power generation, and marine